latam sensim angustatum. Inflorescentiae saepissime 
unicae, laxe pauci- vel multiflorae, diffusae, rachide frac- 
tiflexa. Sepalum dorsale ovatum, subito caudatum, tri- 
nervium, concavum. Sepala lateralia dimidio inferiore 
connata, oblique lanceolata, longe acuminata, cellulari- 
ciliata. Petala minora, transverse bilobata, lobo dorsali 
paulo majore et oblongo-ovato. Labellum trilobatum; 
lobi laterales conspicui, oblique triangulares, apice pelta- 
ti; lobus medius minutus, triangulari-linearis. Columna 
arcuata, apice dilatata. 
Plant small, delicate, caespitose. Roots fibrous, gla- 
brous. Stems filiform, up to 5 em. high, entirely concealed 
by four or five close tubular sheaths. Cauline sheaths 
with longitudinal microscopically hispid nerves, termi- 
nating in an infundibuliform hispid marginate mucronate 
mouth. Leaf small, oblanceolate-elliptic or elliptic-obo- 
vate, acute and minutely tridenticulate at the apex, grad- 
ually narrowed to a petiolate base, up to 3.9 em. long 
and 9 mm. wide, subcoriaceous, marginate. Inflorescences 
usually one (occasionally two), more or less surpassing 
the leaf, loosely several- to many-flowered, diffuse or 
arcuate, up to 16 em. long, with strongly fractiflex ra- 
chis. Floral bracts originating below the pedicel, infun- 
dibuliform, long-awned, about equaling the pedicellate 
ovary. Flowers membranaceous, ringent. Dorsal sepal 
ovate, about 7.5 mm. long and 8.9 mm. wide, rather 
abruptly caudate above with the cauda about 2.5-3 mm. 
long, concave, 8-nerved with the nerves carinate without 
(the keels being rather high and with irregular margins). 
Lateral sepals connate for nearly half their length, about 
7.5mm. long and 4 mm. wide across the connate portion, 
obliquely lanceolate, long-acuminate, irregularly cellular- 
ciliate, obscurely 2-nerved with the conspicuous inner 
nerve carinate on the outer surface. Petals much smaller 
than the sepals, adnate to the column, finely pubescent, 
[ 122 
